CVE-2019-16928
CriticalActively exploited (CISA KEV)
Description
Exim 4.92 through 4.92.2 allows remote code execution, a different vulnerability than CVE-2019-15846. There is a heap-based buffer overflow in string_vformat in string.c involving a long EHLO command.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Exim Internet Mailer
PublishedSep 27, 2019
First seenSep 27, 2019
Added to KEVMar 3, 2022
Weakness typeCWE-787Out-of-bounds write
How to fix
CISA required action
Apply updates per vendor instructions.
CISA due date: Mar 17, 2022Vendor advisories
- debian.org/security/2019/dsa-4536
- usn.ubuntu.com/4141-1/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T3TJW4HPYH3O5HZCWGD6NSHTEBTTAPDC/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UY6HPRW7MR3KBQ5JFHH6OXM7YCZBJCOB/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EED7HM3MFIBAP5OIMJAFJ35JAJABTVSC/
- security.gentoo.org/glsa/202003-47
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| exim exim | 4.92 ≤ v ≤ 4.92.2 | — |
| canonical ubuntu_linux | 19.04 | — |
| debian debian_linux | 10.0 | — |
| fedoraproject fedora | 29, 30, 31 | — |
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